Re: Query documents where Field Doesn't Exist

[Vlad K <ku...@gmail.com>]

Hi Adrien, I had a chance to test and I see that there is one more
solution. For fields that we want to search for exist/doesn't exist add one
more indexed field, like "ex_field=1" and can search by: +ex_field=1 or
-ex_field=1. It works fast.

On Fri, Nov 13, 2015 at 5:21 AM, Adrien Grand <jp...@gmail.com> wrote:

> Hi Vlad,
>
> This is something that you generally can't do. If you have doc values
> enabled on your fields, you can use Lucene's FieldValueQuery, but beware
> that this query is very slow. Otherwise if your field is indexed, you can
> run a TermRangeQuery that has both bounds open but this will be even slower
> (and by that I mean that this could never return on a large index). So
> generally the best way to address this problem is to solve it by indexing a
> meta-data field that contains the list of the fields that a document
> contains. Then you can filter documents that have a field or not by running
> a TermQuery against this field.
>
>
> Le mer. 11 nov. 2015 à 22:43, Vlad K <ku...@gmail.com> a écrit :
>
> > Hello,
> >
> > I read some discussions at Internet and still don't see if there is an
> > official Lucene's solution to support: "query documents where Field
> Doesn't
> > exist"
> >
> > Do you know if there is some recommended solution?
> >
> > Thanks,
> > Vladimir Kuzmin
> >
>